Which heater box is correct?

So the one on the bottom with the motor resistor on the top is for a 64. You should be able to use a 63 box with 64 cables. Be interesting to see what you come up with. I have both a 63 Dart and 64 Barracuda.
63 Cars did not have the heater box in the engine compartment, only 60-62. 63's did have the wiper motor in an unusual spot, still in the car but jet out making it hard to put in a V8, distro would hit.